Web Servers

Finding out which Ubuntu version is running on your system can be important when troubleshooting issues or searching for installation guides. Also, it is essential to ensure you are not using a version which is outdated if you want to keep your computer security risks. In this tutorial, learn how to check the Ubuntu version running on your operating system.

Ubuntu 18.04 (codenamed Bionic Beaver) is a free, open-source distribution of Linux, based on the Debian operating system. In this tutorial, learn how to install on Ubuntu 18.04. 

Apache Tomcat is a free, open-source, lightweight application server used for Java-based web applications. Developers use it to implement Java Servlet and JavaServer Pages technologies (including Java Expression Language and Java WebSocket). Read this guide to learn how to install and configure Apache Tomcat on Ubuntu 18.04.

Node Package Manager (npm) is Node’s official package manager, used for installing and managing package dependencies. In this guide, learn how to install Node.js and npm on CentOS 7. We also cover managing multiple Node versions and install dependencies.

Apache Tomcat is an open source Java implementation package developed by the Apache Software Foundation. In this tutorial learn how to install Tomcat 9 on CentOS 7.

Docker Compose is a software package that modifies the behavior of Docker. Docker creates a specific container environment for running an application. Docker Compose lets you string together multiple Docker containers to work together. This guide will help you install and work with Docker Compose.

There are programs that answer two of the most common questions web administrators and SEO's keep asking when it comes to server response time: How fast is my website? How do I improve website performance? We made a list of the best tools to test website speed and performance.

Are you running into the ERR_SSL_VERSION_OR_CIPHER_MISMATCH error? This error happens in a user’s browser when they try to access a website. It means that there’s a difference between the security information that was provided and the actual configuration of the website. This guide provides solutions.

Nmap stands for Network Mapper. It is an open source tool for network exploration and security auditing. With NMAP, server administrators can easily reveal hosts and services on a computer, scan for security issues and check for open ports. The NMAP command line tool can audit and discover local and remote open ports, as well as network information and hosts. Here are some of the most useful Nmap commands with examples.

The LAMP stack is a bundle consisting of a Linux operating system, an Apache server, a MySQL database, and the PHP programming language. Each layer of the stack represents an open-source software required for developing web applications. In this tutorial learn how to install the LAMP stack on CentOS 7.